Han Suk-kyu
King Se-jong (24 eps)
Jang Hyuk
Kang Chae-yoon / Ddol-bok (24 eps)
Shin Se-kyung
So-yi / Dam (24 eps)
Cho Jin-woong
Moo-hyul (24 eps)
Yoon Je-moon
Jeong Gi-joon (24 eps)
Baek Yoon-sik
Yi Bang-won (24 eps)
Park Hyuk-kwon
Jung In-ji (24 eps)
Kim Ki-bum
Pak Paengnyeon (24 eps)
Shin So-yul
Mok-ya (24 eps)
Choi Il-hwa
Kim Jongseo (24 eps)
Kim Ki-bang
Cho Tak (24 eps)
Lee Soo-hyuk
Yoon Pyeong (24 eps)
Choi Woo-shik
Jeong Gi-joon / Ga Ri-on (young) (24 eps)
Ahn Suk-hwan
Lee Shin-juk (24 eps)
Jo Hee-bong
Han Myung-hoi / Han Ga-nom (24 eps)
Lee Jae-yong
Cho Mal-sang (24 eps)
Kim Hyeon-soo
So-Yi (child) (24 eps)
Yeo Jin-goo
Ddol-bok (teen) (24 eps)
Jung Jong-chul
Ok Ddeol-i (24 eps)
Han Sang-jin
Sim Jong-soo (24 eps)
Woo Hyeon
Lee Bang-ji (24 eps)
Ryu Seung-su
Jang Seong-soo (24 eps)
Jung Da-bin
Yeon-doo (24 eps)
Kim Jong-Kuk
Jeong Byul-gam (24 eps)
Kim Eung-soo
Ki Je-yeon (24 eps)
Jeon No-min
Jeong Do-kwang (24 eps)
Seo Jun-young
Grand Prince Gwangpyeong (24 eps)
Hyun Woo
Seong Sam-mun (24 eps)
Goo Seung-hyun
Kang Chae-yoon and Dam's eldest son (24 eps)
Song Ok-suk
Do Dam-daek (24 eps)
Lee Se-na
Geun-Ji (24 eps)
Kim Kyung-Jin
Gakseoli Boss (24 eps)
Song Joong-ki
King Se-Jong [Young] (24 eps)
